Scottsdale, Arizona
Hotel spa at the Inn at Eagle Mountain in Fountain Hills with sauna, steam room, pools and a $69 60-minute massage as its signature treatment.
$
Spas with thermal pool
3 spas match
Piva Beer Spa
Day SpaChicago, Illinois
A West Town day spa built around a beer soak, with sauna, steam room, salt room and thermal pool for couples or solo visits.
$$Fivelements Retreat Bali
Destination SpaUbud, Bali
An adults-only wellness retreat on Ubud's Ayung River offering multi-day healing programmes, thermal circuits and plant-based cuisine by reservation only.
$$$$
